Control unit for VG Micromass 70-70F mass spectrometer
1974
1974
1973
1971
1978
1975
2000-100 BCE
(1962); 1982
1975
1971
1970
1979
1986
1970
1977
circa 1972
1971
1974
1975
1975
1975
1975
1971
1974
1971
1974
1975
1975
1974
1974
1974
1975
1975
1975
1975
1974
1974
1975
1974-1975
1975
1972
1974
1975
1974
1971
1971
1973
1971
1974
1974
1974